Nitrogen Adsorption Studies of PAN-Based Activated Carbon Fibers Prepared by Different Activation Methods

Ryu, Zhenyu; Zheng, Jingtang; Wang, Maozhang; Zhang, Bijiang

doi:10.1006/jcis.2000.7078

Cited by 56 publications

(28 citation statements)

References 25 publications

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“…10 −6 -10 −4 , 10 −4 -10 −2 , 10 −2 -10 −1 , and 0.9-1. Unlike conventional activated carbons (28) but like other ACFs (20,29), all the samples in this work, even those activated to the highest BO, show a significant nitrogen uptake below p/ p 0 = 10 −5 , indicating the presence of a large amount of ultramicropores. However, the relative importance of the narrowest microporosity in the total porosity of the samples diminishes as BO increases.…”

Section: Nitrogen Adsorption Isotherms Comparative Plots and Derivementioning

confidence: 81%

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Porous Texture Evolution in Nomex-Derived Activated Carbon Fibers

Villar–Rodil

Denoyel

Rouquérol

et al. 2002

Journal of Colloid and Interface Science

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In the present work, the textural evolution of a series of activated carbon fibers with increasing burn-off degree, prepared by the pyrolysis and steam activation of Nomex aramid fibers, is followed by measurements of physical adsorption of N(2) (77 K) and CO(2) (273 K) and immersion calorimetry into different liquids (dichloromethane, benzene, cyclohexane). The immersion calorimetry results are discussed in depth, paying special attention to the choice of the reference material. The activated carbon fibers studied possess an essentially homogeneous microporous texture, which suggests that these materials may be applied in gas separation, either directly or with additional CVD treatment.

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Section: Nitrogen Adsorption Isotherms Comparative Plots and Derivementioning

confidence: 81%

“…to 0.1 (20). Total porosity (V p(N 2 ) ) was calculated from the gas volume adsorbed at P/P 0 = 0.95.…”

Section: Methodsmentioning

confidence: 99%

Porous Texture Evolution in Nomex-Derived Activated Carbon Fibers

Villar–Rodil

Denoyel

Rouquérol

et al. 2002

Journal of Colloid and Interface Science

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show abstract

“…Due to the relatively small molecular diameter of nitrogen [25], nitrogen adsorption was used at 77 K to analyse porosity and surface area of the chars. Table 2 shows the characterization results for chars produced form contaminated Columbian bituminous coal.…”

Section: Char Characteristicsmentioning

confidence: 99%

Influence of preparation conditions on the characteristics of activated carbons produced in laboratory and pilot scale systems

Qada¹,

Allen²,

Walker³

2008

Chemical Engineering Journal

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“…Although the pore size distribution derived by density functional theory are based on a continuous pore size distribution, realistic pore size distribution is focused on the several peaks, which correspond to approximately integral multiples of the lattice space of graphite (0.35 nm) [24]. Fig.…”

Section: Resultsmentioning

confidence: 99%